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Automation, robotics, sensors - 2022

Electric and electro-hydraulic servo-controllers

Basic principles and comparison


The course will enable learners to become familiar with electric or electro-hydraulic servo-controllers.


The course lasts 5 days (30 hours) and includes:

  • Lectures
  • Instructor-led exercises
  • Examples of industrial applications
  • Panel discussion with the facilitators


The course aims to provide the basics of theory and practice to engineers who will be required to specify, use and design complex electric and electro-hydraulic power systems. It also includes a recap of the concepts of servo-controllers and related methods (Black Plan, digital integration, FFT). It also offers a comparison between electro-hydraulic systems and electrical systems.


Course level : Basic

This course is suitable for engineers wishing to improve their skills in the field of electro-hydraulic servo-controllers using power hydraulics and electrical servo-controllers using electromechanical actuators.

A basic knowledge of servo-controller theory is desirable.



Systems Manager at UTC Aerospace Systems


Mechanical Systems and Modeling Technical Manager at UTC Aerospace Systems


  • Issues
    • Distinction between electro-hydraulic and electrical servo-controllers
    • Distinction between position servo-controllers (95% of cases), speed servo-controllers, force servo-controllers (linear movements) and paired servo-controllers (rotary motions)
  • Basics
    • Recap of the basic principles: a hydraulic motor
    • Recap of the basic principles: electric motorization
    • Recap of the basic concepts: transfer functions, response to standard inputs (level, ramp, sinusoid), graphical and numerical methods
  • Servo-controller methodology
    • Functional schema
    • Determining dynamic performance:
      • The usual criterion (speed/stability compromise)
      • Secondary criteria
      • Graphical linearization methods
      • Digital modeling methods
  • Technological components
    • Block diagrams of hydraulic circuits (source at constant pressure, flow control at the source) and electrical circuits
    • Actuators and components: description and scaling
      • Linear actuators: hydraulic cylinders and electromechanical cylinders
      • Rotary actuators: hydraulic motors and electric motors
      • Flow servo valves, pressure servo valves
      • Mechanical transformation systems of rotary movements into linear movements
      • Electrical motor command and control principles
    • More electric systems: issues and prospects for airliners.
  • Specifications/technical agreements
    • Presentation and exploitation of a standard technical agreement/set of specifications
    • Transposition of data into a force-speed (or torque-speed) loading pattern
  • Research offices/departments
    • Examination of a servo-controller in position in a real command case by both graphical and digital methods
    • Comparative study between an electro-hydraulic servo-controller and an electrical servo-controller on the same case (see specifications/technical agreements)
    • Study of the dynamic behavior of electrical and hydraulic components (examples: self-regulating pump with constant pressure, etc.) by a digital simulation method


Scheduled in French:

PARIS: 5 to 9 December 2022


For the English realization, please, consult us.


€2 350 excluding tax (20% VAT)

See general terms

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